From an email earlier from Derrick, if you are plugged in to the HDMI port you need to select "DVI" from the LCD's menu for the correct data to be used by the screen.
The "HDMI" menu option is designed to accept HDMI data from a camera, and is not always compatible with a PC.

So you can use the HDMI cable port, just select DVI on the screen's menu.

From an email earlier from Derrick, if you are plugged in to the HDMI port you need to select "DVI" from the LCD's menu for the correct data to be used by the screen.
The "HDMI" menu option is designed to accept HDMI data from a camera, and is not always compatible with a PC.

So you can use the HDMI cable port, just select DVI on the screen's menu.